ZC, Karakoc, Koyuncu Irmak D, Tugrul S, Ece F, Gormeli CA, Ozyilmaz K, and Karaoz E. 2021. “Three Critical COVID-19 Cases Treated With Mesenchymal Stem Cells: A Case Series Report”. Archives of Clinical and Medical Case Reports 5 (1):8-42. https://fortunejournals.org/ojs/index.php/acmcr/article/view/22441.